Method, system and apparatus for creating virtual machine

ABSTRACT

A method, a system, and an apparatus for creating a virtual machine. The method includes receiving a virtual machine creation request to create a plurality of virtual machines; dividing the plurality of virtual machines into a plurality of virtual machine groups; determining a home physical rack for each virtual machine group, where one virtual machine group corresponds to one home physical rack; and creating each virtual machine group on the home physical rack of each virtual machine group. Because each virtual machine group is created on a home physical rack to which each virtual machine group belongs, each virtual machine group is equivalent to one physical rack.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Patent ApplicationNo. PCT/CN2013/085820, filed on Oct. 23, 2013, which is herebyincorporated by reference in its entirety.

TECHNICAL FIELD

Embodiments of the present invention relate to computer technologies,and in particularly, to a method, a system, and an apparatus forcreating a virtual machine.

BACKGROUND

A cloud computing system mainly includes a cloud application layer, acloud virtualization layer, and a physical device layer. The cloudvirtualization layer creates a virtual machine (VM) according to aphysical resource on a physical device layer, and these virtual machinesrun various applications on the cloud application layer separately orprovide services to them. One cloud application may be distributed inone or more virtual machines, and one or more virtual machinescorresponding to one cloud application may be grouped into one virtualmachine cluster.

Currently, some cluster software exists, for example, a distributedapplication mainly considers high availability and high reliability ofan application, for example, cluster software like Hadoop. Hadoop iscapable of performing distributed processing on mass data, and makingfull use of high speed computing power and storage of a cluster. Hadoopimplements a distributed file system Hadoop Distributed File System(HDFS), and can maintain a plurality of working data replicas. For threemost common data replication blocks, the principle of the HDFS is that afirst replication block is stored in different nodes of a same physicalrack, and a last replication block is stored in one node of differentphysical racks. Because of the request of high reliability and highavailability of cluster software, allocating a virtual machine to thistype of cluster software to perform service creation, and running aservice by the cluster software according to an allocated virtualmachine are difficulties during combination of a virtualizationtechnology with the cluster software.

The cluster software is designed based on a physical machine cluster.However, in the virtualization technology, a resource of the virtualmachine is flexibly scheduled by a cloud virtualization layer accordingto a physical resource on a physical device layer. For example, physicalresources forming a virtual machine may come from different physicalmachines on different physical racks. Therefore, the cloudvirtualization layer in prior art cannot create a virtual machinemeeting a running requirement of cluster software, for example, adistributed application.

SUMMARY

Embodiments of the present invention provide a method, an apparatus, anda system for creating a virtual machine, which are used to create avirtual machine satisfying a running requirement of a distributedapplication for the distributed application.

According to a first aspect, an embodiment of the present inventionprovides a method for creating a virtual machine, including receiving avirtual machine creation request, where the virtual machine creationrequest is used to create a plurality of virtual machines; determining aplurality of virtual machine groups, where the plurality of virtualmachine groups is obtained by grouping the plurality of virtualmachines, and each virtual machine group includes at least one virtualmachine; determining a home physical rack for each virtual machinegroup, where one virtual machine group corresponds to one home physicalrack; and creating each virtual machine group on the home physical rackof each virtual machine group.

With reference to the first aspect, in a first possible implementationmanner, different virtual machines in each virtual machine group arecreated in different physical machines on the home physical rack.

With reference to the first aspect or the first possible implementationmanner of the first aspect, in a second possible implementation manner,one home physical rack is determined for each virtual machine groupaccording to configuration information of each virtual machine group,where the configuration information of each virtual machine groupincludes the number of virtual machines included in each virtual machinegroup and a specification of each of the virtual machines.

With reference to the second possible implementation manner of the firstaspect, in a third possible implementation manner, a current virtualmachine group on a to-be-allocated home physical rack is determined,idle physical racks on a physical device layer are acquired, firstphysical racks whose idle resources meet a resource required by thecurrent virtual machine group are selected from the idle physical racksaccording to the number of virtual machines included in each virtualmachine group and the specification of each of the virtual machines, andone first physical rack is selected from the first physical racks as thehome physical rack.

With reference to the third possible implementation manner of the firstaspect, in a fourth possible implementation manner, constraintinformation of the virtual machine group is acquired, allocation recordinformation of the home physical rack is acquired, where the allocationrecord information includes a correspondence between the virtual machinegroup of the allocated home physical rack and the home physical rack,and one first physical rack is selected, according to the allocationrecord information and the constraint information of the virtual machinegroup, from the first physical racks as the home physical rack of thecurrent virtual machine group.

With reference to the first aspect or the first possible implementationmanner of the first aspect, in a fifth possible implementation manner,constraint information of the virtual machine group is acquired, wherethe constraint information of the virtual machine group denotes anassociation relationship or a mutex relationship between the pluralityof virtual machine groups, and one home physical rack is determined foreach virtual machine group according to the constraint information ofthe virtual machine group.

With reference to the fourth possible implementation manner of the firstaspect or the fifth possible implementation manner of the first aspect,in a sixth possible implementation manner, the constraint information ofthe virtual machine group includes different virtual machine groupscorrespond to different home physical racks; and one different homephysical rack is determined for each virtual machine group.

With reference to the first aspect or any one possible implementationmanner of the first aspect, in a seventh possible implementation manner,the method further includes acquiring an identifier of each virtualmachine group, and providing the identifier of each virtual machinegroup to an application module, so that the application module processesa service according to the identifier of each virtual machine group.

According to a second aspect, an embodiment of the present inventionprovides a method for creating a virtual machine, including receiving avirtual machine creation request, where the virtual machine creationrequest is used to create a plurality of virtual machines for adistributed application; determining a plurality of virtual machinegroups, where the plurality of virtual machine groups is obtained bygrouping the plurality of virtual machines, and each virtual machinegroup includes at least one virtual machine; acquiring configurationinformation of each virtual machine group, where the configurationinformation of each virtual machine group includes the number of virtualmachines included in each virtual machine group and a specification ofeach of the virtual machines; determining a deployment attribute of thevirtual machine group according to a running attribute of thedistributed application; and creating each virtual machine groupaccording to the configuration information of each virtual machine groupand the deployment attribute of the virtual machine group.

With reference to the second aspect, in a first possible implementationmanner, a virtual machine rack attribute of the virtual machine group isdetermined according to a rack awareness attribute of the distributedapplication, where the virtual machine rack attribute denotes that onevirtual machine group corresponds to one home physical rack; and onehome physical rack is determined for each virtual machine groupaccording to the virtual machine rack attribute of the virtual machinegroup; and each virtual machine group on the home physical rack of eachvirtual machine group is created according to the configurationinformation of each virtual machine group.

With reference to the first possible implementation manner of the secondaspect, in a second possible implementation manner, different virtualmachines in each virtual machine group are created in different physicalmachines on the home physical rack according to the configurationinformation of each virtual machine group.

With reference to the second aspect or the first possible implementationmanner of the second aspect, in a third possible implementation manner,one different home physical rack is determined for each virtual machinegroup according to the virtual machine rack attribute of the virtualmachine group.

According to a third aspect, an embodiment of the present inventionprovides an apparatus for creating a virtual machine, including areceiving unit configured to receive a virtual machine creation request,where the virtual machine creation request is used to create a pluralityof virtual machines; a grouping unit configured to determine a pluralityof virtual machine groups, where the plurality of virtual machine groupsis obtained by grouping the plurality of virtual machines, and eachvirtual machine group includes at least one virtual machine; aconfiguring unit configured to determine a home physical rack for eachvirtual machine group, where one virtual machine group corresponds toone home physical rack; and a creating unit configured to create eachvirtual machine group on the home physical rack of each virtual machinegroup.

With reference to the third aspect, in a first possible implementationmanner, the creating unit is configured to create, in different physicalmachines on the home physical rack, different virtual machines in eachvirtual machine group.

With reference to the third aspect or the first possible implementationmanner of the third aspect, in a second possible implementation manner,the configuring unit is configured to determine one home physical rackfor each virtual machine group according to configuration information ofeach virtual machine group, where the configuration information of eachvirtual machine group includes the number of virtual machines includedin each virtual machine group and a specification of each of the virtualmachines.

With reference to the second possible implementation manner of the thirdaspect, in a third possible implementation manner, the configuring unitincludes a determining subunit configured to determine a current virtualmachine group on a to-be-allocated home physical rack; acquire idlephysical racks on a physical device layer; and select, from the idlephysical racks according to the number of virtual machines included ineach virtual machine group and the specification of each of the virtualmachines, first physical racks whose idle resources can meet a resourcerequired by the current virtual machine group; and a selecting subunitconfigured to select one first physical rack from the first physicalracks as the home physical rack.

With reference to the third possible implementation manner of the thirdaspect, in a fourth possible implementation manner, the selectingsubunit is configured to acquire constraint information of the virtualmachine group; acquire allocation record information of the homephysical rack, where the allocation record information includes acorrespondence between the virtual machine group of the allocated homephysical rack and the home physical rack; and select, according to theallocation record information and the constraint information of thevirtual machine group, one first physical rack from the first physicalracks as the home physical rack of the current virtual machine group.

With reference to the third aspect or the first possible implementationmanner of the third aspect, in a fifth possible implementation manner,the configuring unit is configured to acquire constraint information ofthe virtual machine group, where the constraint information of thevirtual machine group denotes an association relationship or a mutexrelationship between the plurality of virtual machine groups; anddetermine one home physical rack for each virtual machine groupaccording to the constraint information of the virtual machine group.

With reference to the fourth possible implementation manner of the thirdaspect or the fifth possible implementation manner of the third aspect,in a sixth possible implementation manner, the constraint information ofthe virtual machine group includes different virtual machine groupscorrespond to different home physical racks; and the configuring unitdetermines one different home physical rack for each virtual machinegroup.

With reference to the third aspect or any one possible implementationmanner of the third aspect, in a seventh possible implementation manner,the apparatus further includes a sending unit configured to acquire anidentifier of each virtual machine group, and provide the identifier ofeach virtual machine group to an application module, so that theapplication module processes a service according to the identifier ofeach virtual machine group.

According to a fourth aspect, an embodiment of the present inventionprovides an apparatus for creating a virtual machine, including areceiving unit configured to receive a virtual machine creation request,where the virtual machine creation request is used to create a pluralityof virtual machines for a distributed application; a grouping unitconfigured to determine a plurality of virtual machine groups, where theplurality of virtual machine groups is obtained by grouping theplurality of virtual machines, and each virtual machine group includesat least one virtual machine; an acquiring unit configured to acquireconfiguration information of each virtual machine group, where theconfiguration information of each virtual machine group includes thenumber of virtual machines included in each virtual machine group and aspecification of each of the virtual machines; a determining unitconfigured to determine a deployment attribute of the virtual machinegroup according to a running attribute of the distributed application;and a creating unit configured to create each virtual machine groupaccording to the configuration information of each virtual machine groupand the deployment attribute of the virtual machine group.

With reference to the fourth aspect, in a first possible implementationmanner, the determining unit is configured to determine a virtualmachine rack attribute of the virtual machine group according to a rackawareness attribute of the distributed application, where the virtualmachine rack attribute denotes that one virtual machine groupcorresponds to one home physical rack; the creating unit is configuredto determine one home physical rack for each virtual machine groupaccording to the virtual machine rack attribute of the virtual machinegroup; and create each virtual machine group on the home physical rackof each virtual machine group according to the configuration informationof each virtual machine group.

According to a fifth aspect, an embodiment of the present inventionprovides a system for creating a virtual machine, including a cloudvirtualization apparatus configured to receive a virtual machinecreation request, where the virtual machine creation request is used tocreate a plurality of virtual machines; determine a plurality of virtualmachine groups, where the plurality of virtual machine groups isobtained by grouping the plurality of virtual machines, and each virtualmachine group includes at least one virtual machine; determine a homephysical rack for each virtual machine group, where one virtual machinegroup corresponds to one home physical rack; create each virtual machinegroup on the home physical rack of each virtual machine group; acquirean identifier of each virtual machine group, and provide the identifierof each virtual machine group to an application apparatus; and theapplication apparatus configured to receive the identifier of eachvirtual machine group, and process a service according to the identifierof each virtual machine group.

In the embodiments of the present invention, when a plurality of virtualmachines are created for a distributed application, firstly it isdetermined that the plurality of virtual machines are grouped to obtaina plurality of virtual machine groups, one home physical rack isallocated to each virtual machine group, and each virtual machine groupis created on the home physical rack of each virtual machine group.Because each virtual machine group is created on the home physical rack,virtual machines in each virtual machine group share a same homephysical rack, so that each virtual machine group corresponds to onephysical rack. Using this virtual machine creation manner, a deploymentattribute of each of the virtual machines in each virtual machine groupcan meet a rack awareness attribute of the distributed application, tocreate a virtual machine cluster meeting a running requirement of adistributed application for the distributed application. Moreover, inthe embodiments of the present invention, the distributed applicationmay be implemented in combination with a virtualization technologywithout being changed, and it is ensured that the performance of thedistributed application is not affected.

BRIEF DESCRIPTION OF DRAWINGS

To describe the technical solutions in the embodiments of the presentinvention more clearly, the following briefly introduces theaccompanying drawings required for describing the embodiments. Theaccompanying drawings in the following description are merely someembodiments of the present invention, and a person of ordinary skill inthe art may still derive other drawings from these accompanying drawingswithout creative efforts.

FIG. 1 is a constitutional diagram of an architecture of a virtualmachine system according to an embodiment of the present invention;

FIG. 2 is a flowchart of a method according to an embodiment of thepresent invention;

FIG. 3 is a flowchart of another method according to an embodiment ofthe present invention;

FIG. 4 is a flowchart of still another method according to an embodimentof the present invention;

FIG. 5 is a network topology structural diagram of a virtual machinecluster created according to an embodiment of the present invention;

FIG. 6 is a flowchart of yet another method according to an embodimentof the present invention;

FIG. 7 is a constitutional diagram of an apparatus for creating avirtual machine according to an embodiment of the present invention;

FIG. 8 is a constitutional diagram of another apparatus for creating avirtual machine according to an embodiment of the present invention;

FIG. 9 is a constitutional diagram of still another apparatus forcreating a virtual machine according to an embodiment of the presentinvention;

FIG. 10 is a constitutional diagram of yet another apparatus forcreating a virtual machine according to an embodiment of the presentinvention;

FIG. 11 is a constitutional diagram of a system for creating a virtualmachine according to an embodiment of the present invention; and

FIG. 12 is a constitutional diagram of a computer according to anembodiment of the present invention.

DESCRIPTION OF EMBODIMENTS

Embodiments of the present invention provide a method, an apparatus, anda system for creating a virtual machine, and a created virtual machinecluster can meet a running requirement of a distributed application.

As shown in FIG. 1, which is an example of an architectural diagram of avirtual machine system according to an embodiment of the presentinvention, the virtual machine system in this example includes a cloudapplication layer 11, a cloud virtualization layer 12, and a physicaldevice layer 13.

A distributed application may run on the cloud application layer 11, andthe distributed application includes, but is not limited to, distributedcluster software such as the HDFS software and the like. On the cloudapplication layer 11, a service processing module executing anapplication is an application module 111.

The cloud virtualization layer 12 is configured to abstract a physicalresource on the physical device layer 13 into a plurality of the virtualmachines according to a requirement of the cloud application layer 11,and manage the virtual machines. A module performs virtual machinecreation/construction/abstracting on the cloud virtualization layer 12is referred to as a virtualization module in the embodiment of thepresent invention, for example, a virtualization module 121 shown inFIG. 1.

The physical device layer 13 includes one or more physical racks, andeach physical rack includes one or more physical machines. A physicalresource provided by each physical machine may include one or more of acentral processing unit (CPU) resource, a memory resource, a storageresource, and a network resource. The physical resource provided by thephysical device layer 13 is abstracted by the virtualization module 121into a plurality of virtual machines, and the virtual machines areprovided to a corresponding distributed application to provide aservice.

With reference to FIG. 1, as shown in FIG. 2, which is a flowchart ofcreating a virtual machine according to an embodiment of the presentinvention, the method according to the embodiment of the presentinvention includes:

Step 201: Receive a virtual machine creation request, where the virtualmachine creation request is used to create a plurality of virtualmachines.

The virtual machine creation request may carry configuration informationof the plurality of virtual machines.

In specific implementation, a virtualization module may receive thevirtual machine creation request, the virtual machine creation requestmay be creation requests of a plurality of virtual machine groups, eachvirtual machine group includes at least one virtual machine, and thevirtual machine creation request may further be creation requests of aplurality of virtual machines. Specific implementation manners of thecreation requests of the plurality of virtual machine groups or thecreation requests of the plurality of virtual machines may be flexible,which may be creating a plurality of virtual machine groups or aplurality of virtual machines using one request, and may be creating aplurality of virtual machine groups or a plurality of virtual machinesusing a plurality of requests. Preferably, one virtual machine group orone virtual machine is created using one request, and specificimplementation is not limited in the embodiment of the presentinvention.

The configuration information of each of the virtual machines mayinclude configuration information such as a computing resource (forexample, a CPU), a storage resource (for example, a memory) or a networkresource (for example, a network Internet Protocol (IP) address) of thevirtual machine. For example, the creation request of each virtualmachine group indicates the number of virtual machines included in eachvirtual machine group and a specification of each of the virtualmachines or the creation request of each of the virtual machines denotesa specification of each of the virtual machines.

Step 202: Determine a plurality of virtual machine groups, where theplurality of virtual machine groups is obtained by grouping theplurality of virtual machines, and each virtual machine group includesat least one virtual machine.

Further, when the virtualization module receives creation requests of aplurality of virtual machine groups, the plurality of virtual machinegroups may be determined according to the creation requests of theplurality of virtual machine groups. When the virtualization modulereceives creation requests of a plurality of virtual machines, thevirtualization module may first group the plurality of virtual machinesinto a plurality of virtual machine groups, and then determineinformation of the virtual machine group according to a grouping result.

Step 203: Determine a home physical rack for each virtual machine group,where one virtual machine group corresponds to one home physical rack.

Based on the requirement of a running attribute of a distributedapplication, the virtualization module in the embodiment of the presentinvention considers the running attribute of the distributed applicationwhen creating a virtual machine for the distributed application,performs adaptation according to the running attribute of thedistributed application, and generates a deployment attribute of avirtual machine group adapted to the running attribute of thedistributed application. For example, the running attribute of thedistributed application is adapted according to a rack awarenessattribute in the running attribute of the distributed application, andit is determined that the deployment attribute of the virtual machinegroup includes the virtual machine rack attribute. That is, one virtualmachine group may be simulated as one virtual machine rack, and onevirtual machine rack may be equivalent to one physical rack. Accordingto the virtual machine rack attribute of the virtual machine group, eachvirtual machine group corresponds to one home physical rack, and eachvirtual machine group is created or deployed on a corresponding homephysical rack of each virtual machine group.

Therefore, the virtualization module determines one home physical rackfor each virtual machine group. Further, the virtualization module maydetermine one home physical rack for each virtual machine groupaccording to configuration information of each virtual machine group, ormay allocate one home physical rack to each virtual machine grouprandomly or by taking turns. In actual deployment, if the physicalresource of the allocated home physical rack cannot meet a resourcerequirement of the virtual machine group, another home physical rack maybe allocated.

Step 204: Create each virtual machine group on the home physical rack ofeach virtual machine group.

Further, a resource of a physical machine on the home physical rack maybe used to create each of virtual machines in each virtual machinegroup.

In the embodiment of the present invention, when creating a plurality ofvirtual machines for a distributed application, firstly, avirtualization module determines that the plurality of virtual machinesare grouped to obtain a plurality of virtual machine groups, thenallocates one home physical rack to each virtual machine group, andcreate each virtual machine group on the home physical rack of eachvirtual machine group. Because each virtual machine group is created onthe home physical rack to which each virtual machine group belongs,virtual machines in each virtual machine group share a same homephysical rack, so that each virtual machine group corresponds to onephysical rack. Using this virtual machine creation manner, a deploymentattribute of each of the virtual machines in each virtual machine groupcan meet a rack awareness attribute of the distributed application tocreate a virtual machine cluster meeting a running requirement of adistributed application for the distributed application. Moreover, inthe embodiment of the present invention, the distributed application maybe implemented in combination with a virtualization technology withoutbeing changed, and it is ensured that the performance of the distributedapplication is not affected. In addition, in the embodiment of thepresent invention, the granularity of the virtual machine group is usedto create the virtual machine, and the manner of creating a virtualmachine using a virtual machine group is more efficient.

As shown in FIG. 3, which is another flowchart of creating a virtualmachine for a distributed application according to an embodiment of thepresent invention, the method according to the embodiment of the presentinvention includes:

Step 301: Receive a virtual machine creation request, where the virtualmachine creation request is used to create a plurality of virtualmachines for a distributed application.

Step 302: Determine a plurality of virtual machine groups, where theplurality of virtual machine groups is obtained by grouping theplurality of virtual machines, and each virtual machine group includesat least one virtual machine.

Step 303: Determine a deployment attribute of each virtual machine groupaccording a running attribute of the distributed application.

Step 304: Create each virtual machine group according to configurationinformation of each virtual machine group and the deployment attributeof the virtual machine group.

This embodiment is another implementation manner of the presentinvention, and in step 303, based on a requirement of a runningattribute of a distributed application, a virtualization module in theembodiment of the present invention considers the running attribute ofthe distributed application when creating a virtual machine for thedistributed application, performs adaptation according to the runningattribute of the distributed application, and generates a deploymentattribute of a virtual machine group adapted to the running attribute ofthe distributed application. In step 304, each virtual machine group maybe created according to the configuration information of each virtualmachine group and the deployment attribute of each virtual machinegroup, to meet a running requirement of the distributed application.

Further, the virtualization module may determine a virtual machine rackattribute of the virtual machine group according to a rack awarenessattribute of the distributed application, where the virtual machine rackattribute denotes that one virtual machine group corresponds to one homephysical rack; and the virtualization module determines one homephysical rack for each virtual machine group according to configurationinformation of each virtual machine group, and creates each virtualmachine group on the home physical rack of each virtual machine group,that is, different virtual machines in one virtual machine group arecreated on a same physical rack.

In the embodiment of the present invention, that a plurality of clustersoftware and different running attributes of different cluster softwareexist in the industry is taken into consideration, an adaptation layeris added in the virtualization module to create a virtual machinecluster meeting a distributed application, so that the distributedapplication can be implemented in combination with a virtualizationtechnology without being changed, and it is ensured that the performanceof the distributed application is not affected.

Further, in another embodiment of the present invention, after step 204or step 304, the following steps may further be performed:

Step 205/305: Acquire an identifier of each virtual machine group.

The virtualization module may allocate one identifier to each virtualmachine group, to stand for each virtual machine group.

Step 206/306: Provide the identifier of each virtual machine group to anapplication module on an upper layer, so that the application module onthe upper layer processes a service according to the identifier of eachvirtual machine group.

Further, the virtualization module may send a physical rack number ofeach of the virtual machines to the application module on the upperlayer, where the physical rack number of each of the virtual machines isan identifier of a virtual machine group where each of the virtualmachines is located.

In this embodiment, because the identifier of each virtual machine groupis further provided to the application module on the upper layer, forexample, a distributed application module, when the application moduleon the upper layer runs in the plurality of virtual machines, thevirtual machine group to which each of the virtual machines belongs maybe learned, and therefore, network topology information of each node maybe acquired, and service processing is performed according to anidentifier of the acquired virtual machine group. For example, it isensured that the same service is not allocated to virtual machines in asame virtual machine group for processing, to meet reliability andavailability requirements of an upper layer application.

For a rack awareness attribute of a distributed application and avirtual machine rack attribute of a virtual machine group, details aredescribed in following embodiments.

As shown in FIG. 4, which is still another flowchart of creating avirtual machine for a distributed application according to an embodimentof the present invention, the method according to the embodiment of thepresent invention includes:

Step 401: A virtualization module receives creation requests of aplurality of virtual machine groups, where the creation request of eachvirtual machine group indicates the number of virtual machines includedin each virtual machine group and a specification of each of the virtualmachines.

In this embodiment, the virtualization module no longer provides acreation template of a single virtual machine, but provides a creationtemplate of the distributed application or a creation template of thevirtual machine group. The creation template of the distributedapplication includes a plurality of virtual machine groups, each virtualmachine group includes at least one virtual machine, the plurality ofvirtual machine groups corresponds to one virtual machine cluster, andthe virtual machine cluster provides a service to the distributedapplication. When it is determined that a virtual machine cluster needsto be created for a distributed application, a cloud manager or a useror management software of another distributed application groups aplurality of virtual machines of the virtual machine cluster, and fillseach group of virtual machines into a creation template of a virtualmachine group. A creation template of each virtual machine groupcorresponds to one virtual machine group, a virtualization modulereceives creation templates of a plurality of virtual machine groups,and a creation template of each virtual machine group may include thenumber of virtual machines, identifiers of the virtual machines and aspecification of each of the virtual machines. For example, 15 virtualmachines need to be created for a distributed application, and twovirtual machines of the 15 virtual machines need to serve as managementnodes, and specification information thereof is eight CPUs, 100 gigabit(G) memory, and other virtual machines serve as serving nodes, andspecification information thereof is two CPUs, 40 G memory(specifications of the serving nodes may be the same, or may bedifferent, and in this embodiment, this embodiment is described using anexample that specifications of the serving nodes are the same). The 15virtual machines are grouped into three groups, where the virtualmachine serving as a management node cannot be set in one group.Therefore, a virtualization module receives creation requests of thethree virtual machine node groups, that is, receives creation templatesof the three virtual machine groups. The templates are as follows:

A creation template of a first virtual machine group: the number ofVMs:5; VM specification: VM1 (8 CPUs, 100 G memory); VM 2 (2 CPUs, 40 Gmemory); VM 3 (2 CPUs, 40 G memory); VM 4 (2 CPUs, 40 G memory); and VM5 (2 CPUs, 40 G memory).

A creation template of a second virtual machine group: the number ofVMs:5; VM specification: VM6 (8 CPUs, 100 G memory); VM7 (2 CPUs, 40 Gmemory); VM8 (2 CPUs, 40 G memory); VM9 (2 CPUs, 40 G memory); and VM10(2 CPUs, 40 G memory).

A creation template of a third virtual machine group: the number ofVMs:5; VM specification: VM1 (2 CPUs, 40 G memory); VM12 (2 CPUs, 40 Gmemory); VM13 (2 CPUs, 40 G memory); VM14 (2 CPUs, 40 G memory), andVM15 (2 CPUs, 40 G memory).

Step 402: The virtualization module determines the plurality of virtualmachine groups according to the creation requests of the plurality ofvirtual machine groups.

For example, determine the three virtual machine groups according to thecreation requests of the three virtual machine groups.

Step 403: The virtualization module determines one home physical rackfor each virtual machine group.

In this embodiment, after determining a plurality of virtual machinegroups, the virtualization module may further configure one homephysical rack for each virtual machine group, and the virtual machine ineach virtual machine group is created on the home physical rack.

The embodiment of the present invention is directed to creating avirtual machine meeting a running requirement of a distributedapplication for the distributed application, and features of thedistributed application are taken into consideration in the process ofcreating a virtual machine in the embodiment of the present invention.

Large-scale distributed applications may be distributed on a pluralityof physical racks. In this case, the following requirements aregenerated based on reliability and availability requirements: it isexpected that communication between different nodes can be carried outwithin a same physical rack as much as possible rather than across thephysical racks, aiming at minimizing overhead generated during datawriting; and a management node places replica of data blocks into theplurality of physical racks as much as possible, aiming at improving afault tolerance capability and maximizing reliability and availabilityof the data.

Based on the two requirements, the running attribute of the distributedapplication includes a rack awareness attribute, and when a distributedapplication runs, physical rack information in network topologyinformation of each node is acquired using the rack awareness attribute,and service processing is performed according to the obtained physicalrack information. For example, with respect to replica placement, areplica placement policy of data blocks is directed to obtaining abalance between the foregoing two requirements, and following rules maybe observed: a first replica is placed on a local node; a second replicais placed on different physical racks; a third replica is placed indifferent physical machines on a local physical rack; and the remainingreplicas are randomly placed on the premise of observing the followingrequirements: one node is placed with one replica at most; and if thenumber of replicas is less than twice of the number of racks, it is notallowed to place more than two replicas on one rack.

That is, when data reading occurs to the distributed application, themanagement node needs to obtain rack information of each node todetermine, according to the foregoing rules, which node the datareplicas are to be placed, and which node runs or processes the datareplicas.

When the distributed application is combined with the virtualizationtechnology, a node performing tasks is a virtual machine. Therefore, thedistributed application needs to know a rack number of each of thevirtual machines to perform service processing. In addition, for whichphysical machine the virtual machine performing tasks is to be deployedon, specific rules also need to be observed, so that the runningrequirement of the distributed application can be satisfied.

According to the embodiment of the present invention, based on therequirement of the running attribute of the distributed application, thevirtualization module considers the running attribute of the distributedapplication when creating a virtual machine cluster for the distributedapplication, an adaptation layer is added, and the running attribute ofthe distributed application is adapted to generate a deploymentattribute of a virtual machine group adapted to the running attribute ofthe distributed application, so that a created virtual machine clustercan meet the running attribute of the distributed application. Forexample, the virtual machine rack attribute of the virtual machine groupis generated according to the rack awareness attribute of thedistributed application. That is, the same virtual machine groupcorresponds to one home physical rack. A virtual machine in each of thevirtual machines node groups is created on a home physical rack of thevirtual machine.

In this embodiment, the virtual machine rack attribute of the virtualmachine group is used to simulate an attribute of a physical rack, onevirtual machine rack may be equivalent to one physical rack, and virtualmachines on one virtual machine rack have the same features as physicalmachines on one physical rack. For example, physical and softwareresources of each physical machine on each physical rack areindependence and do not interfere with each other, but have same powerand infrastructure (for example, air conditioning apparatus, and thelike). Therefore, correspondingly, each of the virtual machines on eachof the virtual racks also has independent physical and softwareresources that do interfere with each other, and have the same power andinfrastructure. Further, if the virtual machine rack attribute of thevirtual machine group and the physical rack need to have same features,different virtual machines in a same virtual machine group are createdon a same physical rack, that is, physical resources of differentvirtual machines in one virtual machine group should come from the samephysical rack.

The implementation manner of determining one home physical rack for eachvirtual machine group in step 403 may be various. The virtualizationmodule may first determine one home physical rack for each virtualmachine group according to configuration information of each virtualmachine group, or may allocate one home physical rack to each virtualmachine group randomly or by taking turns. In actual deployment, if thephysical resource of the allocated home physical rack cannot meet aresource requirement of the virtual machine group, another home physicalrack may be allocated. For example, step 403 may include:

Step 403-1: Determine a current virtual machine group on ato-be-allocated home physical rack.

Step 403-2: Acquire idle physical racks on a physical device layer.

In the embodiment of the present invention, an idle physical rack or anidle physical machine, which mainly refers to a physical rack or aphysical machine whose physical resources are not fully occupied, mayinclude a physical rack or a physical machine whose resources are notfully occupied, and may also refers to a physical rack or a physicalmachine whose resources are partially occupied.

Step 403-3: Select, from the idle physical racks according to the numberof virtual machines included in each virtual machine group and aspecification of each of the virtual machines, first physical rackswhose idle resources meet a resource required by the current virtualmachine group.

Step 403-4: Select one first physical rack from the first physical racksas the home physical rack.

In the foregoing process of determining a home physical rack, thevirtualization module considers configuration information of eachvirtual machine group, selects a physical rack whose idle resources meeta resource requirement of the virtual machine group as the home physicalrack, thereby ensuring that creating a virtual machine group on a homephysical rack can be performed successfully, and improving a creationsuccess rate of the virtual machine group.

Further, in step 403-3, the virtualization module may further determineif a resource of each physical machine in a physical rack satisfies aresource requirement of each of the virtual machines, and performsfurther selection on the home physical rack, so that each physicalmachine of the determined home physical rack can create each of thevirtual machines of a corresponding virtual machine group, and thesuccess creation of the virtual machine can further be ensured. Forexample, step 403-3 may be performed in the following manners:

Step 403-3-1: Determine the number of idle physical machines on each ofthe idle physical racks.

Step 403-3-2: Select a second physical rack from the idle physical racksaccording to the number of virtual machines included in the currentvirtual machine group, where the number of idle physical machines on thesecond physical rack is greater than or equal to the number of virtualmachines included in the current virtual machine group.

Step 403-3-2: Select the first physical rack from the second physicalracks according to the specification of each of the virtual machinesincluded in the current virtual machine group, where an idle physicalresource of the idle physical machine on the first physical racksatisfies a resource requirement of each of the virtual machines in thecurrent virtual machine group.

In the process of determining one home physical rack for each virtualmachine group in step 403, in addition to the configuration informationof each virtual machine group, the constraint information of the virtualmachine group may further be considered, where the constraintinformation of the virtual machine group indicates an associationrelationship or a mutex relationship between the plurality of virtualmachine groups. Certainly, the virtualization module may also determineone home physical rack for each virtual machine group only according tothe constraint information of the virtual machine group.

With respect to the distributed application, one piece of clustersoftware usually may include a plurality of redundant software examples(corresponding to the virtual machines), and a topological relationshipof the software examples is complex. For example, with respect to theHadoop software, management nodes may not be on a same physical rack, toensure the service reliability. Therefore, when creating a virtualmachine cluster for the distributed application, the virtualizationmodule may acquire constraint information of the virtual machine group,where the constraint information of the virtual machine group is used toindicate creation of an association relationship or a mutex relationshipbetween the plurality of virtual machine groups. For example, somevirtual machine groups need to be created in the same physical machineor on the same physical rack, and some virtual machine groups need to becreated in the different physical machine or on the different physicalrack.

Preferably, a implementation manner is as follows: step 403-4: selectone first physical rack from the first physical racks as a home physicalrack of the current virtual machine group, which may be specificallyperformed according to the following manners:

Step 403-4-1: Acquire constraint information of the virtual machinegroup.

Preferably, the constraint information of the virtual machine group inthis embodiment may be sent to the virtualization module together withcreation requests of a plurality of virtual machine groups. Theforegoing example is used as an example again, for example, a managementnode needs to perform creation across physical racks, and therefore, thevirtualization module receives the following constraint information ofthe virtual machine group:

The first virtual machine group and the second virtual machine groupcannot be created on a same physical machine rack.

In implementation, the constraint information of the virtual machinegroup may be specified directly in a creation template of the pluralityof virtual machine groups, or may be sent the virtualization module asan independent message, or may be determined by the virtualizationmodule according to attribute information of the distributed applicationand a corresponding rule, which is not limited in the embodiment of thepresent invention.

Step 403-4-2: Acquire allocation record information of the home physicalrack, where the allocation record information includes a correspondencebetween the virtual machine group of the allocated home physical rackand the home physical rack.

Step 403-4-3: Select, according to the allocation record information andthe constraint information of the virtual machine group, one firstphysical rack from the first physical racks as the home physical rack ofthe current virtual machine group.

For example, according to constraint information of the virtual machinegroup that the first virtual machine group and the second virtualmachine group cannot be created on the same physical machine rack, thehome physical rack of the first virtual machine group selects a firstphysical rack, and the home physical rack of the second virtual machinegroup selects a second physical rack.

In addition, because of a higher reliability requirement of thedistributed application, for example, at least one same data replicaneeds to be placed on different physical racks, the constraintinformation of the virtual machine group may further be set as differentvirtual machine groups correspond to different home physical racks. Thevirtualization module determines one different home physical rack foreach virtual machine group according to the constraint information ofthe virtual machine group. For example, the home physical rack of thefirst virtual machine group is a physical rack 3, the home physical rackof the second virtual machine group is a physical rack 1, and the homephysical rack of the third virtual machine group is a physical rack 2.

Step 404: The virtualization module creates each virtual machine groupon the home physical rack of each virtual machine group.

The virtualization module creates each of the virtual machines of eachvirtual machine group on the home physical rack of each virtual machinegroup according to the configuration information of each virtual machinegroup, for example, the number of virtual machines included in eachvirtual machine group and the specification of each of the virtualmachines. Further, the virtualization module schedules a physicalresource on a physical device layer according to the number of virtualmachines in each virtual machine group and the specification of each ofthe virtual machines, to create each of the virtual machines in eachvirtual machine group.

Further, in step 404, the virtualization module may further create, indifferent physical machines on the home physical rack, different virtualmachines in each virtual machine group, that is, the virtualizationmodule creates, in different physical machines on the same physicalrack, different virtual machines in one virtual machine group, forexample:

The first virtual machine group is created on the physical rack 3, VM 1is created on the physical machine 1 of the physical rack 3, VM 2 iscreated on the physical machine 2 of the physical rack 3, VM 3 iscreated on the physical machine 3 of the physical rack 3, VM 4 iscreated on the physical machine 4 of the physical rack 3, and VM 5 iscreated on the physical machine 5 of the physical rack 3.

The second virtual machine group is created on the physical rack 1, VM 6is created on the physical machine 1 of the physical rack 1, VM 7 iscreated on the physical machine 2 of the physical rack 1, VM 8 iscreated on the physical machine 3 of the physical rack 1, VM 9 iscreated on the physical machine 4 of the physical rack 1, and VM 10 iscreated on the physical machine 5 of the physical rack 1.

The third virtual machine group is created on the physical rack 2, VM 11is created on the physical machine 1 of the physical rack 2, VM 12 iscreated on the physical machine 2 of the physical rack 2, VM 13 iscreated on the physical machine 3 of the physical rack 2, VM 14 iscreated on the physical machine 4 of the physical rack 2, and VM 15 iscreated on the physical machine 5 of the physical rack 2.

The foregoing virtualization module creates, in different physicalmachines of the same home physical rack, different virtual machines ofthe same virtual machine groupon, thereby ensuring that the virtualmachine group further has the same attribute as the physical rack, sothat the virtual machine group can meet a running requirement of higherreliablity of a distributed application.

Step 405: The virtualization module acquires an identifier of eachvirtual machine group.

The virtualization module may allocate a virtual machine groupidentifier to each virtual machine group, for example, a virtual machinegroup identifier allocated by the virtualization module for the firstvirtual machine group is Virtual Rack (VR) 1; a virtual machine groupidentifier allocated to the second virtual machine group is VR 2; and avirtual machine group identifier allocated to the third virtual machinegroup is VR 3.

The step 406 may be performed after the virtualization module determinesa plurality of virtual machine groups, and the description in theembodiment of the present invention herein does not limit a sequenceduring implementation thereof.

Certainly, the virtualization module may not need to allocate anidentifier to the virtual machine group, but acquire an identifier ofthe virtual machine group carried in the creation request of eachvirtual machine group.

Step 406: The virtualization module provides the identifier of eachvirtual machine group to an application module on an upper layer, sothat the application module on the upper layer processes a serviceaccording to the identifier of each virtual machine group.

Further, the virtualization module provides the identifier of eachvirtual machine group to the distributed application.

The rack awareness of the distributed application is not adaptive.Firstly, a manager of the distributed application adopts a tree-likenetwork topology structure to manage each node of the distributedapplication, for example, the distributed application is formed by aplurality of data center (DC), and each data center has a plurality ofracks, where each rack has a plurality of physical machines. Each nodemay represent its position in the network topology structure via thefollowing forms. For example, the position of R1 may be denoted as/D1/R1, and the position of N12 may be denoted as /D2/R4/N12. Secondly,the management node is informed of a network topology relationship ofeach serving node.

Therefore, the virtualization module may further provide the identifierof each virtual machine group to the distributed application, so thatthe distributed application processes a service according to theidentifier of each virtual machine group.

For example, the virtualization module returns a virtual machinecreation result, including VR 1 (VM 1, VM 2, VM 3, VM 4, and VM 5), VR 2(VM 6, VM 7, VM 8, VM 9, and VM 10), and VR 3 (VM 11, VM 12, VM 13, VM14, and VM 15)

Preferably, the virtualization module may use the identifier of avirtual machine group which each of the plurality of virtual machinebelongs to as a rack number of each of the virtual machines, and providethe rack number to the distributed application.

Further, the virtualization module may provide information of thephysical rack where each of the plurality of virtual machine is deployedto the distributed application. For example, the virtualization modulereturns the following information: VR 1-Rack1, VR 2-Rack2 and VR3-Rack3.

Upon acquiring the identifier of each virtual machine group, thedistributed application may establish a network topology structure ofeach of the virtual machines, and configure a network topology result toa management node of the distributed application, so that the managementnode performs service processing according to the network topologystructure of each of the virtual machines. As shown in FIG. 5, a networktopology structural diagram of a virtual machine group which is createdby the application module and provides services to a distributedapplication according to the embodiment of the present invention isgiven. For example, VM 1 serves as a management node, and when data isreceived, processing is performed according to the network topologystructure of each of the virtual machines: a first replica is placed ona local node, such as VM 1; a second replica is placed on differentphysical racks, such as VM 7 in VMG 2; and a third replica is placed indifferent physical machines on a physical rack, such as VM 2 in VMG1.

In the embodiment of the present invention, when a virtualization modulecreates a plurality of virtual machines for a distributed application,firstly it is determined that the plurality of virtual machines aregrouped to obtain a plurality of virtual machine groups, one homephysical rack is allocated to each virtual machine group, and eachvirtual machine group is created on the home physical rack of eachvirtual machine group. Because each virtual machine group is created onthe home physical rack, the virtual machines in each virtual machinegroup belong to the same home physical rack, so that each virtualmachine group corresponds to one physical rack. Using this virtualmachine creation manner, a deployment attribute of each of the virtualmachines in each virtual machine group satisfies a rack awarenessattribute of the distributed application. In this way, a virtual machinecluster meeting a running requirement of a distributed application iscreated for the distributed application. Moreover, in the embodiment ofthe present invention, that a plurality of cluster software anddifferent running attributes of different cluster software exist in theindustry is taken into consideration; an adaptation layer is added inthe virtualization module to create a virtual machine cluster meeting adistributed application, so that the distributed application can beimplemented in combination with a virtualization technology withoutbeing changed, and it is ensured that the performance of the distributedapplication is not affected. In addition, in the embodiment of thepresent invention, the granularity of the virtual machine group is usedto create the virtual machine, and the manner of creating a virtualmachine using a virtual machine group is more efficient.

In this embodiment, because the identifier of each virtual machine groupis further provided to the application module on the upper layer, forexample, a distributed application module, when the application moduleon the upper layer runs on in the plurality of virtual machines, thevirtual machine group to which each of the virtual machines belongs maybe learned, and therefore, network topology information of each node maybe acquired, and service processing is performed according to anidentifier of the acquired virtual machine group. For example, it isensured that the same service is not allocated to virtual machines in asame virtual machine group for processing, to meet the reliability andavailability request of an application on the upper layer.

In addition, in this embodiment, the virtualization module furtherconsiders the constraint information of the virtual machine group tocreate the virtual machine group, so that a plurality of virtual machinegroups belonging to one distributed application do not share a physicalrack. That is, any two virtual machine groups are not created on onephysical rack, and the virtual machine cluster created in this way canmeet a running requirement of higher reliablity of a distributedapplication.

Further, in this embodiment, the virtualization module creates, indifferent physical machines on the same home physical rack, differentvirtual machines of the same virtual machine group, thereby ensuringthat the virtual machine group further has the same attribute as thephysical rack, so that the virtual machine group can meet a runningrequirement of higher reliablity of a distributed application

Further, in this embodiment, the virtualization module no longerprovides a creation template of a single virtual machine, but provides acreation template of the distributed application or a creation templateof the virtual machine group, thereby providing a more convenient mannerfor creating a virtual machine cluster.

As shown in FIG. 6, which is still another flowchart of creating avirtual machine group according to an embodiment of the presentinvention, the method according to the embodiment of the presentinvention includes:

Step 601: A virtualization module receives creation requests of aplurality of virtual machines, where a creation request of each of thevirtual machines indicates the number of virtual machines, and aspecification of each of the virtual machines.

The plurality of virtual machines are grouped into one virtual machinecluster, where the virtual machine cluster provides a service to adistributed application

In this embodiment, the virtualization module provides a creationtemplate of a single virtual machine, a cloud manager or a user fills aplurality of virtual machines of the virtual machine cluster in acreation template of one virtual machine when it is determined that thevirtual machine cluster needs to be created for a distributedapplication and the virtualization module receives a creation templateof a plurality of virtual machines. The creation template of each of thevirtual machines may include the number of virtual machines, andidentifiers and configuration information thereof.

Preferably, the creation template of the virtual machine received by thevirtualization module may be a creation template classified according tothe specification of the virtual machine, for example, a to-be-createdvirtual machine includes two kinds of specifications, and thevirtualization module may receive two creation templates of the virtualmachine, where each creation template includes the number of virtualmachines, and specifications and identifiers thereof.

For example, 15 virtual machines need to be created for a distributedapplication, and two virtual machines of the 15 virtual machines need toserve as management nodes, and specification information thereof iseight CPUs, 100 G memory, and other virtual machines serve as servingnodes, and specification information thereof is two CPUs, 40 G memory(specifications of the serving nodes may be the same, or may bedifferent, and in this embodiment, this embodiment is described using anexample that specifications of the serving nodes are the same). Thevirtualization module receives the following creation templates of thevirtual machine: template one (a first virtual machine creationrequest): virtual machine specification: 8 CPUs, 100 G memory; a virtualmachine identifier: VM 1 and VM 6; and the number of virtual machines:2; and template two (second virtual machine creation request): virtualmachine specification: 2 CPUs, 40 G memory; a virtual machineidentifier: VM 2, VM 3, VM 4, VM 5, VM 7, VM 8, VM 9, VM 10, VM 11, VM12, VM 13, VM 14, and VM 15; and the number of virtual machines: 13.

Step 602: The virtualization module groups the plurality of virtualmachines into the plurality of virtual machine groups.

In the foregoing embodiment, when it is determined that a virtualmachine cluster needs to be created for a distributed application, acloud manager or a user or management software of another distributedapplication groups a plurality of virtual machines of the virtualmachine cluster, and then the virtualization module receives a creationrequest of a grouped plurality of virtual machine groups. However, inthis embodiment, the virtualization module receives creation requests ofa plurality of virtual machines, and the virtualization module needs togroup the plurality of virtual machines, to obtain a plurality ofvirtual machine groups. The virtualization module needs to consider adistributed attribute of the distributed application when grouping theplurality of virtual machines. For example, management node distributionis created to meet the reliability, that is, virtual machines serving asa management node cannot be grouped in a same group, and an obtainedvirtual machine group is as follows:

A first virtual machine group: the number of VMs:5; and members: VM 1,VM 2, VM 3, VM 4, and VM 5.

A second virtual machine group: the number of VMs:5; and members: VM 6,VM 7, VM 8, VM 9, and VM 10.

A third virtual machine group: the number of VMs:5; and members: VM 11,VM 12, VM 13, VM 14, and VM 15.

During grouping of the foregoing virtual machine group, the number ofvirtual machines in each virtual machine group is the same. However, theforegoing is only a specific implementation manner of the presentinvention. In another embodiment, the number of virtual machines in eachvirtual machine group may be random.

Step 603: The virtualization module determines one home physical rackfor each virtual machine group.

Step 604: Create each virtual machine group on the home physical rack ofeach virtual machine group.

Step 605: The virtualization module acquires an identifier of eachvirtual machine group.

Step 606: The virtualization module provides the identifier of eachvirtual machine group to an application module on an upper layer, sothat the application module on the upper layer processes a serviceaccording to the identifier of each virtual machine group.

Specific implementation details of steps 603-606 are similar to those ofsteps 403-406, and are not further described in this embodiment

In the embodiment of the present invention, because the virtualizationmodule receives creation requests of a plurality of virtual machines,the virtualization module further groups a plurality of virtual machinesproviding a service to a distributed application, determines a homephysical rack for the virtual machine group obtained by grouping, andcreates the virtual machine group, so that the created virtual machinecluster can meet a running requirement of the distributed application.

As shown in FIG. 7, an embodiment of the present invention provides anapparatus 700 for creating a virtual machine, which includes a receivingunit 701 configured to receive a virtual machine creation request, wherethe virtual machine creation request is used to create a plurality ofvirtual machines; a grouping unit 702 configured to determine aplurality of virtual machine groups, where the plurality of virtualmachine groups is obtained by grouping the plurality of virtualmachines, and each virtual machine group includes at least one virtualmachine; a configuring unit 703 configured to determine a home physicalrack for each virtual machine group, where one virtual machine groupcorresponds to one home physical rack; and a creating unit 704configured to create each virtual machine group on the home physicalrack of each virtual machine group.

Specifically, the creating unit 704 is specifically configured tocreate, in different physical machines on the home physical rack,different virtual machines in each virtual machine group.

Specifically, in a specific implementation of the embodiment of thepresent invention, the configuring unit 703 is configured to determineone home physical rack for each virtual machine group according toconfiguration information of each virtual machine group, where theconfiguration information of each virtual machine group includes thenumber of virtual machines included in each virtual machine group and aspecifications of each of the virtual machines.

Preferably, as shown in FIG. 8, in another exemplary embodiment of theembodiments of the present invention, in addition to the units shown inFIG. 7, the configuring unit 703 in the apparatus 800 includes adetermining subunit 7031 configured to determine a current virtualmachine group on a to-be-allocated home physical rack; acquire idlephysical racks on a physical device layer; select, from the idlephysical racks according to the number of virtual machines included ineach virtual machine group and the specification of each of the virtualmachines, first physical racks whose idle resources meet a resourcerequired by the current virtual machine group; and a selecting subunit7032 configured to select one first physical rack from the firstphysical racks as the home physical rack.

Further, the determining subunit 7031 is specifically configured todetermine the number of idle physical machines on each of the idlephysical racks; select a second physical rack from the idle physicalracks according to the number of virtual machines included in thecurrent virtual machine group, where the number of idle physicalmachines on the second physical rack is greater than or equal to thenumber of virtual machines included in the current virtual machinegroup; and select the first physical rack from the second physical racksaccording to the specification of each of the virtual machines includedin the current virtual machine group, where an idle physical resource ofthe idle physical machine on the first physical rack satisfies aresource requirement of each of the virtual machines in the currentvirtual machine group.

Further, the selecting subunit 7032 is specifically configured toacquire constraint information of a virtual machine group, acquireallocation record information of the home physical rack, where theallocation record information includes a correspondence between thevirtual machine group of the allocated home physical rack and the homephysical rack, and select, according to the allocation recordinformation and the constraint information of the virtual machine group,one first physical rack from the first physical racks as the homephysical rack of the current virtual machine group.

In another specific implementation of the embodiment of the presentinvention, the configuring unit 703 may be specifically configured toacquire constraint information of the virtual machine group, where theconstraint information of the virtual machine group denotes anassociation relationship or a mutex relationship between the pluralityof virtual machine groups; and determine one home physical rack for eachvirtual machine group according to the constraint information of thevirtual machine group.

In another specific implementation of the embodiment of the presentinvention, as shown in FIG. 9, in addition to the units shown in FIG. 7,an apparatus 900 further includes a sending unit 705 configured toacquire an identifier of each virtual machine group, and provide theidentifier of each virtual machine group to an application module on anupper layer, so that the application module on the upper layer processesa service according to the identifier of each virtual machine group.

Preferably, the sending unit 705 is configured to send a rack number ofeach of the virtual machines to the application module on the upperlayer, where the rack number of each of the virtual machines is anidentifier of a virtual machine group where each of the virtual machinesis located.

As shown in FIG. 10, an embodiment of the present invention provides anapparatus 1000 for creating a virtual machine, which includes areceiving unit 1001 configured to receive a virtual machine creationrequest, where the virtual machine creation request is used to create aplurality of virtual machines for a distributed application; a groupingunit 1002 configured to determine a plurality of virtual machine groups,where the plurality of virtual machine groups is obtained by groupingthe plurality of virtual machines, and each virtual machine groupincludes at least one virtual machine; an acquiring unit 1003 configuredto acquire configuration information of each virtual machine group,where the configuration information of each virtual machine groupincludes the number of virtual machines included in each virtual machinegroup and a specification of each of the virtual machines; a determiningunit 1004 configured to determine a deployment attribute of the virtualmachine group according to a running attribute of the distributedapplication; and a creating unit 1005 configured to create each virtualmachine group according to the configuration information of each virtualmachine group and the deployment attribute of the virtual machine group.

Further, the determining unit 1004 is configured to determine a virtualmachine rack attribute of the virtual machine group according to a rackawareness attribute of the distributed application, where the virtualmachine rack attribute denotes that one virtual machine groupcorresponds to one home physical rack.

The creating unit 1005 is configured to determine one home physical rackfor each virtual machine group according to the virtual machine rackattribute of the virtual machine group, and create each virtual machinegroup on the home physical rack of each virtual machine group accordingto the configuration information of each virtual machine group.

As shown in FIG. 11, an embodiment of the present invention provides asystem for creating a virtual machine, which includes a cloudvirtualization apparatus 1101 configured to receive a virtual machinecreation request, where the virtual machine creation request is used tocreate a plurality of virtual machines; determine a plurality of virtualmachine groups, where the plurality of virtual machine groups isobtained by grouping the plurality of virtual machines, and each virtualmachine group includes at least one virtual machine; determine a homephysical rack for each virtual machine group, where one virtual machinegroup corresponds to one home physical rack; create each virtual machinegroup on the home physical rack of each virtual machine group; acquirean identifier of each virtual machine group, and provide the identifierof each virtual machine group to an application apparatus 1102; and theapplication apparatus 1102 configured to receive the identifier of eachvirtual machine group, and process a service according to the identifierof each virtual machine group.

FIG. 12 is a schematic structural diagram of a computer according to anembodiment of the present invention. The computer according to theembodiment of the present invention may include a processor 1201, amemory 1202, a system bus 1203, and a communications interface 1204. Theprocessor 1201, the memory 1202, and the communications interface 1204may be connected using the system bus 1203 and communicate with eachother.

The processor 1201 may be a single-core or multi-core central processingunit, or a integrated circuit, or be configured as one or moreintegrated circuits implementing the embodiments of the presentinvention.

The memory 1202 may be a high speed random access memory (RAM), or anon-volatile memory, for example, at least one disk memory.

The memory 1202 is configured to execute a computer-executableinstruction 1205. Further, the computer-executable instruction 1205 mayinclude program code.

When a computer runs, the processor 1201 executes thecomputer-executable instruction 1205, and therefore performs the methodprocess shown in any one of FIG. 2, FIG. 3, FIG. 4, and FIG. 6.

A person of ordinary skills in the art may onstand that, variousaspects, or possible implementation manners of various aspects of thepresent invention may be implemented as a system, a method or a computerprogram product. Therefore, each aspect, or a possible implementationmanner of each aspect of the present invention may adopt acomplete-hardware embodiment, a complete-software embodiment (includinga firmware, residence software, and the like), or a form of combiningembodiments of software and hardware aspects, which is herein generallyreferred to as “circuit”, “module” or “system”. In addition, variousaspects and possible implementation manner of various aspects of thepresent invention may employ a computer program product form, and thecomputer program product refers to computer-readable program code storedin a computer-readable medium.

The computer-readable medium may be a computer-readable signal medium ora computer-readable storage medium. The computer-readable storage mediumincludes but is not limited to, an electronic, magnetic, optical,electromagnetic, infrared or semiconductor system, device or apparatus,or a proper combination of any one mentioned in the foregoing, such as aRAM, a read-only memory (ROM), a erasable programmable read only memory(an EPROM or a fast flash memory), an optical fiber, a portable andcompact disc read-only memory (CD-ROM).

A processor in the computer reads computer-readable program code storedin a computer-readable medium, so that the processor is capable ofperforming each step in the flowchart or a functional action regulatedin a combination of each step, and an apparatus performing a functionalstep regulated in each block or a combination of various blocks in theblock diagram is created.

The computer-readable program code may be executed on a user computercompletely, or part is executed on a user computer and serves as anindependent software packet, and part is executed on a user computer andpart is in a remote computer, or the code is executed on a computer or aserver completely. It should also be noted that, in some alternativeimplementation solutions, a function shown in each step in the flowchartor each block in the block diagram may not occur according to thesequence shown in the figure. For example, relied on a related function,two steps shown successively or two blocks may be performedsimultaneously actually, or these blocks sometimes may be performed in areverse sequence.

A person of ordinary skill in the art may be aware that, in combinationwith the examples described in the embodiments disclosed in thisspecification, units and algorithm steps may be implemented byelectronic hardware or a combination thereof. Whether the functions areperformed by hardware or software depends on particular applications anddesign constraint conditions of the technical solutions. A personskilled in the art may use different methods to implement the describedfunctions for each particular application, but it should not beconsidered that the implementation goes beyond the scope of the presentinvention.

The foregoing descriptions are merely specific embodiments of thepresent invention, but are not intended to limit the protection scope ofthe present invention. Any variation or replacement readily figured outby a person skilled in the art within the technical scope disclosed inthe present invention shall fall within the protection scope of thepresent invention. Therefore, the protection scope of the presentinvention shall be subject to the protection scope of the claims.

What is claimed is:
 1. A method for creating virtual machines for adistributed application, comprising: receiving a virtual machinecreation request, wherein the virtual machine creation request instructsan apparatus to create a plurality of virtual machines for thedistributed application; dividing the plurality of virtual machines asinstructed by the virtual machine creation request into a plurality ofvirtual machine groups according to a rack awareness attribute of thedistributed application, wherein each virtual machine group comprises atleast one virtual machine; allocating one home physical rack for eachvirtual machine group according to constraint information of theplurality of virtual machine groups, wherein the constraint informationdenotes an association relationship or a mutex relationship of theplurality of virtual machine groups; and creating the virtual machinegroups on the allocated home physical racks respectively.
 2. The methodaccording to claim 1, wherein different home physical racks areallocated to different virtual machine groups.
 3. The method accordingto claim 1, further comprising acquiring allocation record informationof the home physical racks, wherein the allocation record informationcomprises a correspondence between the virtual machine groups of theallocated home physical racks and the home physical racks; and whereinone home physical rack is allocated for each virtual machine groupaccording to the allocation record information and the constraintinformation.
 4. The method according to claim 1, further comprisingobtaining configuration information of each virtual machine group fromthe virtual machine creation request, wherein the configurationinformation comprises a number of virtual machines in the virtualmachine group and a specification of each of the virtual machines in thevirtual machine group, and wherein different virtual machines of eachvirtual machine group are created in different physical machines of theallocated home physical rack according to the configuration informationof the virtual machine group.
 5. The method according to claim 1,further comprising providing an identifier of the virtual machine groupto the distributed application for processing a service of a virtualmachine belonging to the virtual machine group.
 6. The method accordingto claim 5, wherein the identifier identifies the home physical rackthat is allocated to the virtual machine group.
 7. An apparatus,comprising: a memory for storing program routines; and a processor,coupled to the memory and configured to execute the program routines,wherein the processor is configured to execute the program routines to:receive a virtual machine creation request, wherein the virtual machinecreation request instructs the apparatus to create a plurality ofvirtual machines for a distributed application; divide the plurality ofvirtual machines as instructed by the virtual machine creation requestinto a plurality of virtual machine groups according to a rack awarenessattribute of the distributed application, wherein each virtual machinegroup comprises at least one virtual machine; allocate one home physicalrack for each virtual machine group according to constraint informationof the plurality of virtual machine groups, wherein the constraintinformation denotes an association relationship or a mutex relationshipof the plurality of virtual machine groups; and create the virtualmachine groups on the allocated home physical racks respectively.
 8. Theapparatus according to claim 7, wherein different home physical racksare allocated to different virtual machine groups.
 9. The apparatusaccording to claim 7, wherein the processor is further configured toexecute the program routines to acquire allocation record information ofthe home physical racks, wherein the allocation record informationcomprises a correspondence between the virtual machine groups of theallocated home physical racks and the home physical racks, and whereinone home physical rack is allocated for each virtual machine groupaccording to the allocation record information and the constraintinformation.
 10. The apparatus according to claim 7, wherein theprocessor is further configured to obtain configuration information ofeach virtual machine group from the virtual machine creation request,wherein the configuration information comprises a number of virtualmachines in the virtual machine group and a specification of each of thevirtual machines in the virtual machine group, and wherein differentvirtual machines of each virtual machine group are created in differentphysical machines of the allocated home physical rack according to theconfiguration information of the virtual machine group.
 11. Theapparatus according to claim 7, wherein the processor is furtherconfigured to provide an identifier of the virtual machine group to thedistributed application for processing a service of a virtual machinebelonging to the virtual machine group.
 12. The apparatus according toclaim 11, wherein the identifier identifies the home physical rack thatis allocated to the virtual machine group.
 13. A computer programproduct, comprising non-transitory computer readable medium storingprogram codes thereon for execution by a computing device, wherein theprogram codes comprise: instructions for receiving a virtual machinecreation request, wherein the virtual machine creation request instructsan apparatus to create a plurality of virtual machines for thedistributed application; instructions for dividing the plurality ofvirtual machines as instructed by the virtual machine creation requestinto a plurality of virtual machine groups according to a rack awarenessattribute of the distributed application, wherein each virtual machinegroup comprises at least one virtual machine; instructions forallocating one home physical rack for each virtual machine groupaccording to constraint information of the plurality of virtual machinegroups, wherein the constraint information denotes an associationrelationship or a mutex relationship of the plurality of virtual machinegroups; and instructions for creating the virtual machine groups on theallocated home physical racks respectively.
 14. The computer programproduct according to claim 13, wherein different home physical racks areallocated to different virtual machine groups.
 15. The computer programproduct according to claim 13, wherein the program codes furthercomprise instructions for acquiring allocation record information of thehome physical racks, wherein the allocation record information comprisesa correspondence between the virtual machine groups of the allocatedhome physical racks and the home physical racks, and wherein one homephysical rack is allocated for each virtual machine group according tothe allocation record information and the constraint information. 16.The computer program product according to claim 13, wherein the programcodes further comprise instructions for obtaining configurationinformation of each virtual machine group from the virtual machinecreation request, wherein the configuration information comprises anumber of virtual machines in the virtual machine group and aspecification of each of the virtual machines in the virtual machinegroup, and wherein different virtual machines of each virtual machinegroup are created in different physical machines of the allocated homephysical rack according to the configuration information of the virtualmachine group.
 17. The computer program product according to claim 13,wherein the program codes further comprise instructions for providing anidentifier of the virtual machine group to the distributed applicationfor processing a service of a virtual machine belonging to the virtualmachine group.
 18. The computer program product according to claim 17,wherein the identifier identifies the home physical rack that isallocated to the virtual machine group.